TABLE 1.

Percentages of amino acids occurring at positions 519 and 544 in NSP9 in different subgroups

Subgroup	Representative strain	No. of strains	No. (%) with amino acid at position:
			519		544
			T	S	T	A
1	VR-2332	26	24 (92.3)	0	3 (11.5)	23 (88.5)
2	CH-1a	9	9 (100)	0	0	9 (100)
3	HB-1(sh) 2002	7	2 (28.6)	5 (71.4)	4 (57.1)	3 (42.9)
4	HuN4/JXWn06	145	0	145 (100)	143 (98.6)	2 (1.4)
5	NADC30/MN184A	7	1 (14.3)	5 (71.4)	55 (71.4)	22 (28.6)
Unclassified		10	10 (100)	0	0	10 (100)